24. Chemical reactions occur around us every day. Combustion releases the carbon stored in fossil fuels (e. g. coal, oil, natural gases) into the atmosphere as carbon dioxide gas.
Which of the following equations represent this process?
A. C4H10 + O2 → CO2 + H2O
B. CO2 + H2O → C6H12O6 + O2
C. CaCO3 + HNO3 → Ca(NO3)2 + H2O + CO2
D. NaHCO3 + HC2H3O2 + NaC2H3O2 + H2O + CO2

Astable electron arrangement for an atom is one that does not easily change. how is this arrangement arrived at? a. valence electrons are transferred or shared to create a full outer shell of electrons. b. valence electrons are discarded into space to create a full outer shell of electrons. c. protons (positive charge) pair with valence electrons (negative charge) to create a strong bond. d. outer shells with valence electrons are transferred or shared.